Bronze Corydoras and Mollies, side by side
| Bronze corydoras | Molly | |
|---|---|---|
| Adult size | 2.6 in6.5 cm | 3.9 in10 cm |
| Smallest tank | 20 gal76 L | 30 gal114 L |
| Keep | 6 or more | 3 or more |
| Temperature | 70–81 °F21–27 °C | 73–82 °F23–28 °C |
| pH | 6–8 | 7.5–8.5 |
| Temperament | Peaceful | Peaceful |
| Swims | On the bottom | In the middle |
What size tank do they need together?
Each row shows how many of each the tank carries comfortably when these are the only two kinds in it.
| Tank | Bronze corydoras | Molly |
|---|---|---|
| 5 gallon | Too small for both | |
| 10 gallon | Too small for both | |
| 20 gallon long | Too small for both | |
| 29 gallon | Too small for both | |
| 40 gallon breeder | 8 | 3 |
| 55 gallon | 9 | 5 |
| 75 gallon | 14 | 6 |
| 125 gallon | 21 | 11 |
Open this pair in the stocking calculator to add more fish or try your own tank.
How to make it work
- Add the calmer, smaller fish first, and the larger fish last.
- Use plants, wood or rocks to break up the view across the tank. Fish that cannot see each other all day fight less.
- Watch closely for the first week. Torn fins, hiding or a fish that stops eating mean it is not working.
- Keep a spare tank or a divider ready, so you can separate them the same day.
Questions and answers
Can bronze corydoras and mollies live in the same tank?
Yes, usually. Bronze corydoras and mollies like the same water: 73–81 °F (23–27 °C) and a pH of 7.5–8. Bronze corydoras spend their time on the bottom and mollies in the middle, so they stay out of each other's way.
What size tank do bronze corydoras and mollies need together?
At least a 40 gallon breeder tank, which carries about 8 bronze corydoras and 3 mollies comfortably.
What temperature suits bronze corydoras and mollies?
73–81 °F (23–27 °C) suits both.
More pairs
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- Bronze corydoras and guppies
- Bronze corydoras and neon tetras
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- Mollies and tiger barbs
- Mollies and dwarf gouramis
- Mollies and cherry shrimp
- All pairs
Based on each species' adult size, water range and temperament (Seriously Fish, FishBase) and the rules of our stocking calculator. Individual fish differ: this is a guide, not a guarantee.